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25 Cards in this Set
- Front
- Back
nonpolar covalent bond
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a covalent bond in which the bodning electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge (0-5% ionic character, difference of 0-.3)
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polar
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having an uneven distribution of charge
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nonpolar covalent bonds ionic character
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0-5%
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nonpolar covalent bonds difference in electronegativity
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0-.3
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polar-covalent bond ionic character
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5-50%
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polar covalent bonds difference in electronegativity
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.3-1.7
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Ionic covalent ionic character
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50-100%
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ionic covalent dif. electronegativity
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1.7-3.3
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bond energy
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the energy required to break a chemical bond and form neutral isolated atoms
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Lattice energy
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the energy released when the positive and negative ion pairs arrange themselves into an organized crystal lattice
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Polyatomic ion
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a charged group of covalently bonded atoms that combine with ions of the opposite charge to form ionic compounds
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manner in which metallic bond strength is tested
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heat of vaporization
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dipole-dipole forces
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forces of attraction between polar molecules
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hybridization
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the mixing of 2+ atomic orbitals of similar energies on the same atom to produce new orbitals of equal energies
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hybrid orbitals
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orbitals of equal energy produced by the combination of 2+ orbitals on the same atom
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VSEPR stands for...
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Valence Shell Electron Pair Repulsion
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VSEPR theory states..
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repulsion between the sets of valence shell electrons surrounding an atom causes three sets to be oriented as far apart as possible
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Total # electron pairs = 2
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linear
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total # electron pairs = 2, + 1 loose electrons
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bent
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total # electron pairs = 3
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trigonal planar
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total # electron pairs = 3, + 1 loose electrons
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Trigonal Pyramidal
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Total # electron pairs = 4
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Tetrahedral
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Total # electron pairs = 5
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Trigonal Bipyramidal
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H bonds to _ _ _
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F O N
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London Dispersion Forces
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the intermolecular attractions resulting from the constant motion of electrons after the creation of instantaneous dipoles
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